GB2219465B - Video telephones - Google Patents

Video telephones

Info

Publication number
GB2219465B
GB2219465B GB8912333A GB8912333A GB2219465B GB 2219465 B GB2219465 B GB 2219465B GB 8912333 A GB8912333 A GB 8912333A GB 8912333 A GB8912333 A GB 8912333A GB 2219465 B GB2219465 B GB 2219465B
Authority
GB
United Kingdom
Prior art keywords
video telephones
telephones
video
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB8912333A
Other languages
English (en)
Other versions
GB2219465A (en
GB8912333D0 (en
Inventor
Toru Minematsu
Haruki Nagayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP13210188A external-priority patent/JPH01300787A/ja
Priority claimed from JP13302188A external-priority patent/JPH01302983A/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of GB8912333D0 publication Critical patent/GB8912333D0/en
Publication of GB2219465A publication Critical patent/GB2219465A/en
Application granted granted Critical
Publication of GB2219465B publication Critical patent/GB2219465B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/391—Resolution modifying circuits, e.g. variable screen formats
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/141—Systems for two-way working between two video terminals, e.g. videophone

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Television Signal Processing For Recording (AREA)
GB8912333A 1988-05-30 1989-05-30 Video telephones Expired - Lifetime GB2219465B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13210188A JPH01300787A (ja) 1988-05-30 1988-05-30 静止画の伝送装置
JP13302188A JPH01302983A (ja) 1988-05-31 1988-05-31 静止画の表示装置

Publications (3)

Publication Number Publication Date
GB8912333D0 GB8912333D0 (en) 1989-07-12
GB2219465A GB2219465A (en) 1989-12-06
GB2219465B true GB2219465B (en) 1992-09-23

Family

ID=26466750

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8912333A Expired - Lifetime GB2219465B (en) 1988-05-30 1989-05-30 Video telephones

Country Status (5)

Country Link
US (1) US4979028A (nl)
DE (1) DE3917562A1 (nl)
FR (1) FR2633791B1 (nl)
GB (1) GB2219465B (nl)
NL (1) NL8901370A (nl)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677728A (en) * 1982-02-24 1997-10-14 Schoolman Scientific Corporation Stereoscopic video telecommunication system
DE3853713T2 (de) * 1987-12-17 1996-01-18 Mitsubishi Electric Corp Verfahren zur Übertragung und Anzeige eines Standbildes in einem Standbild-Videotelefon.
US5052037A (en) * 1987-12-24 1991-09-24 Perelman Frank M Video telephone employing pulse width modulation for data transmission
US5230015A (en) * 1989-06-15 1993-07-20 Mitsubishi Denki Kabushiki Kaisha Method and apparatus for static video telephone transmission/receiving
JP2771858B2 (ja) * 1989-08-23 1998-07-02 富士通株式会社 多画面合成装置
KR920003376B1 (ko) * 1989-09-09 1992-04-30 재단법인 한국전자통신연구소 일반 교환 회선용 정지 화상 전화기의 영상 입출력 장치
JPH078036B2 (ja) * 1989-10-23 1995-01-30 三菱電機株式会社 静止画テレビ電話装置
US5062136A (en) * 1990-09-12 1991-10-29 The United States Of America As Represented By The Secretary Of The Navy Telecommunications system and method
US5396269A (en) * 1991-02-20 1995-03-07 Hitachi, Ltd. Television telephone
JPH0530502A (ja) * 1991-07-24 1993-02-05 Hitachi Ltd 一体型テレビ電話機
US5587735A (en) * 1991-07-24 1996-12-24 Hitachi, Ltd. Video telephone
EP0501485B1 (en) * 1991-02-27 1998-07-08 Ricos Co., Ltd. Data and speech transmission device
EP0778704A3 (en) * 1991-07-15 1997-08-20 Hitachi Ltd Teleconference module
EP0523618B1 (en) * 1991-07-15 1997-10-08 Hitachi, Ltd. Picture codec and teleconference terminal equipment
US5235432A (en) * 1991-11-22 1993-08-10 Creedon Brendan G Video-to-facsimile signal converter
JP2680777B2 (ja) * 1992-05-08 1997-11-19 三洋電機株式会社 テレビ電話装置
FR2717976B1 (fr) * 1994-03-25 1996-05-10 Thomson Consumer Electronics Procédé de transmission d'images à format flexible pour systèmes de transmission de données à bas débit.
US5907604A (en) * 1997-03-25 1999-05-25 Sony Corporation Image icon associated with caller ID
JPH1169330A (ja) * 1997-08-19 1999-03-09 Fujitsu Ltd 留守録機能を備えた画像通信装置
JP4131052B2 (ja) 1998-07-17 2008-08-13 ソニー株式会社 撮像装置
US6480510B1 (en) 1998-07-28 2002-11-12 Serconet Ltd. Local area network of serial intelligent cells
US6690677B1 (en) 1999-07-20 2004-02-10 Serconet Ltd. Network for telephony and data communication
EP1119193A3 (en) * 2000-01-19 2010-11-24 Sony Corporation Data processing device for a video camera-recorder with integrated printer, and method for operating the printer
US6549616B1 (en) 2000-03-20 2003-04-15 Serconet Ltd. Telephone outlet for implementing a local area network over telephone lines and a local area network using such outlets
IL135744A (en) 2000-04-18 2008-08-07 Mosaid Technologies Inc Telephone communication system through a single line
US6842459B1 (en) 2000-04-19 2005-01-11 Serconet Ltd. Network combining wired and non-wired segments
IL144158A (en) 2001-07-05 2011-06-30 Mosaid Technologies Inc Socket for connecting an analog telephone to a digital communications network that carries digital voice signals
WO2003039150A1 (en) 2001-10-11 2003-05-08 Serconet Ltd. Outlet with analog signal adapter, a method for use thereof and a network using said outlet
US20030232648A1 (en) * 2002-06-14 2003-12-18 Prindle Joseph Charles Videophone and videoconferencing apparatus and method for a video game console
IL154234A (en) 2003-01-30 2010-12-30 Mosaid Technologies Inc Method and system for providing dc power on local telephone lines
IL154921A (en) 2003-03-13 2011-02-28 Mosaid Technologies Inc A telephone system that includes many separate sources and accessories for it
IL157787A (en) 2003-09-07 2010-12-30 Mosaid Technologies Inc Modular outlet for data communications network
IL159838A0 (en) 2004-01-13 2004-06-20 Yehuda Binder Information device
IL161869A (en) 2004-05-06 2014-05-28 Serconet Ltd A system and method for carrying a signal originating is wired using wires
US7873058B2 (en) 2004-11-08 2011-01-18 Mosaid Technologies Incorporated Outlet with analog signal adapter, a method for use thereof and a network using said outlet
US7813451B2 (en) 2006-01-11 2010-10-12 Mobileaccess Networks Ltd. Apparatus and method for frequency shifting of a wireless signal and systems using frequency shifting
WO2009053910A2 (en) 2007-10-22 2009-04-30 Mobileaccess Networks Ltd. Communication system using low bandwidth wires
US8175649B2 (en) 2008-06-20 2012-05-08 Corning Mobileaccess Ltd Method and system for real time control of an active antenna over a distributed antenna system
WO2010089719A1 (en) 2009-02-08 2010-08-12 Mobileaccess Networks Ltd. Communication system using cables carrying ethernet signals
EP2829152A2 (en) 2012-03-23 2015-01-28 Corning Optical Communications Wireless Ltd. Radio-frequency integrated circuit (rfic) chip(s) for providing distributed antenna system functionalities, and related components, systems, and methods
US9184960B1 (en) 2014-09-25 2015-11-10 Corning Optical Communications Wireless Ltd Frequency shifting a communications signal(s) in a multi-frequency distributed antenna system (DAS) to avoid or reduce frequency interference

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650929A (en) * 1984-02-29 1987-03-17 Heinrich-Hertz-Institut Fur Nachrichtentechnik Berlin Gmbh Communication system for videoconferencing
GB2211048A (en) * 1987-06-26 1989-06-21 Sony Corp Video telephones
EP0320828A2 (en) * 1987-12-17 1989-06-21 Mitsubishi Denki Kabushiki Kaisha Methods for transmitting and displaying a still picture image in a still picture video telephone apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250611A (en) * 1975-10-22 1977-04-22 Nippon Telegr & Teleph Corp <Ntt> Imagery communication method
US4485400A (en) * 1981-01-13 1984-11-27 Lemelson Jerome H Video telephone
DE3507152A1 (de) * 1984-02-29 1985-08-29 Heinrich-Hertz-Institut für Nachrichtentechnik Berlin GmbH, 1000 Berlin Nachrichtensystem fuer bildkonferenzen
US4746980A (en) * 1985-02-04 1988-05-24 Petersen Alfred C Video processing system
JPS62216593A (ja) * 1986-03-18 1987-09-24 Nec Corp 静止画像伝送装置
JPS63142986A (ja) * 1986-12-05 1988-06-15 Nec Corp テレビ電話機
JPS63263982A (ja) * 1987-04-22 1988-10-31 Nec Corp 静止画像伝送装置
JPS644185A (en) * 1987-06-26 1989-01-09 Sony Corp Transmitter for still picture
JP2612574B2 (ja) * 1987-07-29 1997-05-21 日本電信電話株式会社 静止画の伝送装置
JPS6434083A (en) * 1987-07-29 1989-02-03 Nippon Telegraph & Telephone Still picture transmission equipment
JP2612575B2 (ja) * 1987-07-29 1997-05-21 日本電信電話株式会社 静止画の伝送装置
JPS6451883A (en) * 1987-08-24 1989-02-28 Toshiba Corp Still picture transmission system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650929A (en) * 1984-02-29 1987-03-17 Heinrich-Hertz-Institut Fur Nachrichtentechnik Berlin Gmbh Communication system for videoconferencing
GB2211048A (en) * 1987-06-26 1989-06-21 Sony Corp Video telephones
EP0320828A2 (en) * 1987-12-17 1989-06-21 Mitsubishi Denki Kabushiki Kaisha Methods for transmitting and displaying a still picture image in a still picture video telephone apparatus

Also Published As

Publication number Publication date
DE3917562A1 (de) 1989-12-07
FR2633791B1 (fr) 1995-08-18
FR2633791A1 (fr) 1990-01-05
US4979028A (en) 1990-12-18
NL8901370A (nl) 1989-12-18
GB2219465A (en) 1989-12-06
GB8912333D0 (en) 1989-07-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960530